US20230167920A1 - Valve for a spray system - Google Patents
Valve for a spray system Download PDFInfo
- Publication number
- US20230167920A1 US20230167920A1 US17/801,863 US202117801863A US2023167920A1 US 20230167920 A1 US20230167920 A1 US 20230167920A1 US 202117801863 A US202117801863 A US 202117801863A US 2023167920 A1 US2023167920 A1 US 2023167920A1
- Authority
- US
- United States
- Prior art keywords
- elastic membrane
- valve
- cleaning liquid
- hydraulic
- valve according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 239000012528 membrane Substances 0.000 claims abstract description 40
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 44
- 230000008014 freezing Effects 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/022—Devices for relieving the pressure on the sealing faces for lift valves using balancing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7506—Valves
Definitions
- the present invention relates to the field of systems for spraying cleaning liquid for motor vehicles, and in particular to the valves used in these systems.
- Motor vehicles all have a cleaning liquid spraying system for keeping the windscreen of the vehicle clean and allowing the driver to see out optimally.
- This system may also be used for optical devices such as sensors.
- These systems generally comprise a tank for cleaning liquid, a pump and at least one valve which is configured to allow or prevent the passage of the cleaning liquid to the various spray endpieces or spray nozzles.
- valve for a spray system for spraying a cleaning liquid comprising:
- the movable element is a plunger
- the elastic membrane comprises a rigid peripheral portion intended to be secured to the wall of the valve and an elastic central portion configured to deform in the event of freezing of the cleaning liquid.
- the elastic membrane is made at least partially of elastomer.
- the elastic membrane is a metal cap.
- the elastic membrane is produced by bi-material injection molding.
- the elastic membrane is adhesively bonded or welded to the wall.
- the thickness of the elastic membrane is selected as a function of the pressure of the cleaning liquid inside the hydraulic channel, such that the elastic membrane does not deform over the entire range of pressures at which the valve is used.
- FIG. 4 shows a schematic view in cross section of the solenoid valve of FIG. 2 in another configuration.
- the implementations and embodiments of the invention relate to a valve for a system for spraying liquid.
- FIG. 1 shows an exemplary embodiment of a spray system 20 comprising a liquid tank 22 , a pump 24 , and three spray endpieces 26 for spraying cleaning liquid which are configured for example to spray the cleaning liquid over the windscreen or over optical elements of a motor vehicle.
- the spray system 20 also comprises three valves 1 for controlling the distribution of the cleaning liquid to the spray endpieces 26 .
- the valves 1 are connected to the tank 22 by supply hoses 28 and the spray endpieces 26 are connected to the valves 1 by distribution hoses 30 .
- FIG. 2 shows a view in cross section of an electromagnetic valve 1 showing the internal elements of the electromagnetic valve 1
- FIG. 3 shows a view from the side of such an electromagnetic valve 1 .
- the first orifice 9 is configured to be attached to a supply hose 28 for the fluid, for example a cleaning or washing liquid.
- the supply hose 28 is for example connected to a tank 22 for cleaning liquid via a supply pump 24 for supplying the cleaning liquid, as in FIG. 1 .
- the second orifice 11 is configured to be attached to a spray endpiece 26 via a distribution hose 30 .
- the electromagnetic valve 1 also comprises a hydraulic channel 15 connecting the first orifice 9 and the second orifice 11 , said hydraulic channel 15 being in a fluidic relationship with the hydraulic cavity 5 in which the plunger 7 is disposed (the hydraulic channel 15 therefore locally coincides with the second portion 5 b of the hydraulic cavity 5 ).
- the hydraulic channel 15 is configured to be continued on either side of the electromagnetic valve 1 , in particular via the hoses 28 , 30 , so as to transfer the cleaning liquid from the tank 22 to a spray endpiece 26 .
- the plunger 7 is configured to be moved between an open position (not shown), in which it allows the cleaning liquid to pass between the supply hose 28 and the distribution hose 30 , and a closed position (shown in FIG. 2 ), in which it prevents the passage of the cleaning liquid between the supply hose 28 and the distribution hose 30 .
- the plunger 7 comprises for example a first portion 7 a , corresponding to a flexible end in the present case, in particular an elastomer or rubber end, so as to allow good leaktightness in the closed position, the first portion 7 a coming into contact with a wall of the valve body 3 in the closed position so as to prevent the passage of the cleaning liquid through the hydraulic channel 15 , that is to say between the first orifice 9 and the second orifice 11 .
- the plunger 7 is moved from the closed position to the open position by supplying the coil 13 with power (for example above a predetermined voltage threshold).
- An elastic retention element 17 for example a helical spring, may be placed between the valve body 3 (or an element which is fixed relative to the valve body 3 ) and the plunger 7 .
- the elastic retention element 17 is configured to retain the plunger 7 in the closed position when the coil 13 is not supplied with power (or if the power supply is below the predetermined voltage threshold).
- the electromagnetic valve 1 also comprises at least one opening 32 made in a wall of the valve body 3 .
- a single opening 32 is made so as to simplify the manufacture of the valve 1 , but it is also possible to make several openings 32 .
- the opening 32 is preferably made in the second portion 5 b of the hydraulic cavity 5 .
- the opening 32 is closed off by an elastic membrane 21 configured to deform in the event of freezing of the cleaning liquid inside the hydraulic cavity 5 .
- FIG. 4 shows the valve 1 when the cleaning liquid is frozen, with the elastic membrane 21 deformed (with respect to its initial shape shown in FIG. 2 ) as it has expanded due to freezing.
- the opening 32 has a rectangular shape for example, as shown in FIG. 3 , but other shapes are also possible such as a circular shape, for example.
- the size of the opening 32 may be selected as a function of the volume of the hydraulic cavity 5 in such a way that the elastic membrane 21 is large enough to be able to hold the excess volume in the event of freezing of the cleaning liquid inside the hydraulic cavity 5 .
- the additional volume created by the deformation of the elastic membrane 21 corresponds, for example, to at least 10% of the volume of the hydraulic cavity 5 .
- the thickness of the elastic membrane 21 may be selected as a function, on the one hand, of the material selected for the membrane and, on the other hand, of the range of pressures at which the valve 1 is used, such that the elastic membrane 21 does not deform during normal use of the valve 1 , i.e. when the cleaning liquid is not frozen, or during use within the specified range of pressures (a vent is generally provided in the event of excess pressure occurring in the hydraulic circuit of the spray system 20 ).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Nozzles (AREA)
- Mechanically-Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
- Valve Housings (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The present invention relates to a valve for a spray system for spraying a washing liquid comprising a valve body, enclosing a hydraulic cavity which is configured to be fluidically connected to a hydraulic conduit of the spray system and is intended to receive the washing liquid, a mobile element which is configured to be moved in the hydraulic cavity between an open position, in which it lets the washing liquid pass into the hydraulic conduit, and a closed position, in which it blocks the passage of the washing liquid into the hydraulic conduit, characterized in that the valve also comprises at least one opening provided in the wall, said opening being closed by an elastic membrane which is configured to be deformed if the washing liquid freezes in the hydraulic cavity.
Description
- This application is filed under 35 U.S.C. § 371 U.S. National Phase of International Application No. PCT/EP2021/050999 filed Jan. 19, 2021 (published as WO2021170312), which claims priority benefit to French Application No. 2002040 filed on Feb. 28, 2020, the disclosures of which are herein incorporated by reference in their entirety.
- The present invention relates to the field of systems for spraying cleaning liquid for motor vehicles, and in particular to the valves used in these systems.
- Motor vehicles all have a cleaning liquid spraying system for keeping the windscreen of the vehicle clean and allowing the driver to see out optimally. This system may also be used for optical devices such as sensors.
- These systems generally comprise a tank for cleaning liquid, a pump and at least one valve which is configured to allow or prevent the passage of the cleaning liquid to the various spray endpieces or spray nozzles.
- One of the problems with the hydraulic valves placed in the hydraulic circuit of the spray systems is the risk of malfunctioning of the valves, which is linked to the valves becoming frosted. Moreover, in the event of very low temperatures, the cleaning liquid present in the valve can freeze, thereby resulting in damage to the valve due to the water expanding as it freezes, causing the system for spraying cleaning liquid to fail.
- In order to avoid such damage to the valves in the event of freezing, it is therefore necessary to find a solution that makes it possible to protect the electromagnetic valves in the systems for spraying cleaning liquid for motor vehicles in the event of freezing.
- To that end, what is proposed is a valve for a spray system for spraying a cleaning liquid, said valve comprising:
-
- a valve body including a hydraulic cavity configured to be fluidically connected to a hydraulic channel of the spray system and intended to receive the cleaning liquid,
- a movable element configured to be moved in the hydraulic cavity between an open position in which it allows the cleaning liquid to pass into the hydraulic channel, and a closed position in which it prevents the passage of the cleaning liquid into the hydraulic channel,
- at least one opening made in its wall, said opening being closed off by an elastic membrane configured to deform in the event of freezing of the cleaning liquid inside the hydraulic cavity.
- According to one embodiment, the movable element is a plunger.
- According to one embodiment, the elastic membrane comprises a rigid peripheral portion intended to be secured to the wall of the valve and an elastic central portion configured to deform in the event of freezing of the cleaning liquid.
- According to another embodiment, the elastic membrane is made at least partially of elastomer.
- According to another embodiment, the elastic membrane is a metal cap.
- According to another embodiment, the elastic membrane is produced by bi-material injection molding.
- According to another embodiment, the elastic membrane is overmolded on the wall.
- According to another embodiment, the elastic membrane is adhesively bonded or welded to the wall.
- According to another embodiment, the thickness of the elastic membrane is selected as a function of the pressure of the cleaning liquid inside the hydraulic channel, such that the elastic membrane does not deform over the entire range of pressures at which the valve is used.
- According to another embodiment, the surface area of the elastic membrane is selected in such a way as to allow, by its deformation, an increase in the volume of the hydraulic cavity corresponding to an additional volume of the hydraulic cavity obtained by the deformation of the elastic membrane when the cleaning liquid freezes, this additional volume corresponding to at least 10% of the volume of the hydraulic cavity when the membrane is not deformed.
- Further features and advantages of the invention will become more clearly apparent from reading the following description, which is given by way of illustrative and non-limiting example, and from the appended drawings, in which:
-
FIG. 1 schematically shows a system for spraying cleaning liquid; -
FIG. 2 shows a schematic view in section of a solenoid valve according to one embodiment of the present invention; -
FIG. 3 shows a schematic view from the side of a solenoid valve according to one embodiment of the present invention; -
FIG. 4 shows a schematic view in cross section of the solenoid valve ofFIG. 2 in another configuration. - In these figures, elements that are identical bear the same reference signs.
- The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to one embodiment. Individual features of different embodiments may also be combined or interchanged to provide other embodiments.
- The implementations and embodiments of the invention relate to a valve for a system for spraying liquid.
-
FIG. 1 shows an exemplary embodiment of aspray system 20 comprising aliquid tank 22, apump 24, and threespray endpieces 26 for spraying cleaning liquid which are configured for example to spray the cleaning liquid over the windscreen or over optical elements of a motor vehicle. Thespray system 20 also comprises threevalves 1 for controlling the distribution of the cleaning liquid to thespray endpieces 26. Thevalves 1 are connected to thetank 22 bysupply hoses 28 and thespray endpieces 26 are connected to thevalves 1 bydistribution hoses 30. - The
valves 1 are for example electromagnetic valves comprising a coil which, when it is supplied with power, makes it possible to control the movement of a plunger as described in the remainder of the description. However, the invention is not limited to electromagnetic valves and can also be applied to other valve types. -
FIG. 2 shows a view in cross section of anelectromagnetic valve 1 showing the internal elements of theelectromagnetic valve 1, andFIG. 3 shows a view from the side of such anelectromagnetic valve 1. - The
electromagnetic valve 1 comprises a valve body 3 including ahydraulic cavity 5 in which a movable element in the form of theplunger 7 is positioned. The valve body 3 comprises afirst part 3 a comprising acoil 13 arranged around afirst portion 5 a of thehydraulic cavity 5 and asecond part 3 b in which are formed a first orifice 9, corresponding to an inlet orifice for the fluid, and a second orifice 11 (visible inFIG. 3 ), corresponding to an outlet orifice for the fluid, and including asecond portion 5 b of thehydraulic cavity 5. - The first orifice 9 is configured to be attached to a
supply hose 28 for the fluid, for example a cleaning or washing liquid. Thesupply hose 28 is for example connected to atank 22 for cleaning liquid via asupply pump 24 for supplying the cleaning liquid, as inFIG. 1 . - The
second orifice 11 is configured to be attached to aspray endpiece 26 via adistribution hose 30. - The
electromagnetic valve 1 also comprises ahydraulic channel 15 connecting the first orifice 9 and thesecond orifice 11, saidhydraulic channel 15 being in a fluidic relationship with thehydraulic cavity 5 in which theplunger 7 is disposed (thehydraulic channel 15 therefore locally coincides with thesecond portion 5 b of the hydraulic cavity 5). Thehydraulic channel 15 is configured to be continued on either side of theelectromagnetic valve 1, in particular via thehoses tank 22 to aspray endpiece 26. - The
plunger 7 is configured to be moved between an open position (not shown), in which it allows the cleaning liquid to pass between thesupply hose 28 and thedistribution hose 30, and a closed position (shown inFIG. 2 ), in which it prevents the passage of the cleaning liquid between thesupply hose 28 and thedistribution hose 30. - The
plunger 7 comprises for example afirst portion 7 a, corresponding to a flexible end in the present case, in particular an elastomer or rubber end, so as to allow good leaktightness in the closed position, thefirst portion 7 a coming into contact with a wall of the valve body 3 in the closed position so as to prevent the passage of the cleaning liquid through thehydraulic channel 15, that is to say between the first orifice 9 and thesecond orifice 11. Theplunger 7 is moved from the closed position to the open position by supplying thecoil 13 with power (for example above a predetermined voltage threshold). Anelastic retention element 17, for example a helical spring, may be placed between the valve body 3 (or an element which is fixed relative to the valve body 3) and theplunger 7. Theelastic retention element 17 is configured to retain theplunger 7 in the closed position when thecoil 13 is not supplied with power (or if the power supply is below the predetermined voltage threshold). - Moreover, as shown in
FIGS. 2 and 3 , to prevent damage to the valve body 3 when the cleaning liquid inside thehydraulic cavity 5 starts to freeze, for example when external temperatures are below 3° C. (this may vary, however, depending on the composition of the cleaning liquid), theelectromagnetic valve 1 also comprises at least one opening 32 made in a wall of the valve body 3. Preferably, asingle opening 32 is made so as to simplify the manufacture of thevalve 1, but it is also possible to makeseveral openings 32. The opening 32 is preferably made in thesecond portion 5 b of thehydraulic cavity 5. - The
opening 32 is closed off by anelastic membrane 21 configured to deform in the event of freezing of the cleaning liquid inside thehydraulic cavity 5.FIG. 4 shows thevalve 1 when the cleaning liquid is frozen, with theelastic membrane 21 deformed (with respect to its initial shape shown inFIG. 2 ) as it has expanded due to freezing. Theopening 32 has a rectangular shape for example, as shown inFIG. 3 , but other shapes are also possible such as a circular shape, for example. The size of theopening 32 may be selected as a function of the volume of thehydraulic cavity 5 in such a way that theelastic membrane 21 is large enough to be able to hold the excess volume in the event of freezing of the cleaning liquid inside thehydraulic cavity 5. The additional volume created by the deformation of theelastic membrane 21 corresponds, for example, to at least 10% of the volume of thehydraulic cavity 5. - The
elastic membrane 21 is for example made of plastic, such as a thermoplastic elastomer in particular, but other elastic materials may also be used such as thermosetting elastomers; thermoplastic or thermosetting polymers other than elastomers; or metals or alloys, in particular in the form of a metal cap. To ensure a good seal at theelastic membrane 21, various methods may be used to secure theelastic membrane 21 to the valve body 3. Theelastic membrane 21 may be adhesively bonded, welded or overmolded, for example. Bi-material injection molding may also be used to obtain a peripheral part forming a rigid contour configured to be secured to the wall of the valve body 3 and a central part made of flexible, elastic material. The thickness of theelastic membrane 21 may be selected as a function, on the one hand, of the material selected for the membrane and, on the other hand, of the range of pressures at which thevalve 1 is used, such that theelastic membrane 21 does not deform during normal use of thevalve 1, i.e. when the cleaning liquid is not frozen, or during use within the specified range of pressures (a vent is generally provided in the event of excess pressure occurring in the hydraulic circuit of the spray system 20). - Thus, in operation, when the cleaning liquid inside the
hydraulic cavity 5 of thevalve 1 freezes owing to very low temperatures, for example below −10° C., the extra volume taken up by the frozen cleaning liquid owing to its expansion exerts a force on the walls of the valve body 3. This force causes theelastic membrane 21 to deform, as shown inFIG. 4 . To be specific, as theelastic membrane 21 is less rigid than the other areas of the wall of the valve body 3, it is theelastic membrane 21 that becomes deformed. When the temperature rises again, the frozen cleaning liquid melts and resumes its liquid form. Theelastic membrane 21 then returns to its initial shape. Theelastic membrane 21 thus makes it possible to prevent any damage to the valve body 3 or to the elements inside the hydraulic cavity such as theplunger 7, in the event of freezing of the cleaning liquid. Moreover, the valve becomes operational once more when the temperature rises, without the need for manual intervention to make it operational.
Claims (10)
1. Valve for a spray system (20) for spraying a cleaning liquid, said valve comprising:
a valve body including a hydraulic cavity configured to be fluidically connected to a hydraulic channel of the spray system (20) and intended to receive the cleaning liquid,
a movable element configured to be moved in the hydraulic cavity between an open position in which it allows the cleaning liquid to pass into the hydraulic channel, and a closed position in which it prevents the passage of the cleaning liquid into the hydraulic channel,
characterized in that the valve also comprises at least one opening made in its wall, said opening being closed off by an elastic membrane configured to deform in the event of freezing of the cleaning liquid inside the hydraulic cavity.
2. Valve according to claim 1 , in which the movable element is a plunger.
3. Valve according to claim 1 , in which the elastic membrane comprises a rigid peripheral portion intended to be secured to the wall of the valve and an elastic central portion configured to deform in the event of freezing of the cleaning liquid.
4. Valve according to claim 1 , in which the elastic membrane is made at least partially of elastomer.
5. Valve according to claim 1 , in which the elastic membrane is a metal cap.
6. Valve according to claim 1 , in which the elastic membrane is produced by bi-material injection molding.
7. Valve according to claim 1 , in which the elastic membrane is overmolded on the wall.
8. Valve according to claim 1 , in which the elastic membrane is adhesively bonded or welded to the wall.
9. Valve according to claim 1 , in which the thickness of the elastic membrane is selected as a function of the pressure of the cleaning liquid inside the hydraulic channel, such that the elastic membrane does not deform over the entire range of pressures at which the valve is used.
10. Valve according to claim 1 , in which the surface area of the elastic membrane is selected in such a way as to allow, by its deformation, an increase in the volume of the hydraulic cavity corresponding to an additional volume of the hydraulic cavity obtained by the deformation of the elastic membrane when the cleaning liquid freezes, this additional volume corresponding to at least 10% of the volume of the hydraulic cavity.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2002040A FR3107683B1 (en) | 2020-02-28 | 2020-02-28 | VALVE FOR PROJECTION SYSTEM |
FRFR2002040 | 2020-02-28 | ||
PCT/EP2021/050999 WO2021170312A1 (en) | 2020-02-28 | 2021-01-19 | Valve for a spray system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230167920A1 true US20230167920A1 (en) | 2023-06-01 |
Family
ID=71575441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/801,863 Abandoned US20230167920A1 (en) | 2020-02-28 | 2021-01-19 | Valve for a spray system |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230167920A1 (en) |
EP (1) | EP4111080A1 (en) |
JP (1) | JP2023516626A (en) |
KR (1) | KR20220148231A (en) |
CN (1) | CN115335623A (en) |
FR (1) | FR3107683B1 (en) |
WO (1) | WO2021170312A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3135432A1 (en) * | 2022-05-10 | 2023-11-17 | Ford Global Technologies, Llc | SENSOR CLEANING KIT WITH SOLENOID |
FR3141497A1 (en) * | 2022-11-02 | 2024-05-03 | Valeo Systemes D'essuyage | Valve of a system for projecting a cleaning liquid comprising means of compensation in the event of freezing |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030125454A1 (en) * | 2000-03-24 | 2003-07-03 | Ellul Maria D. | Thermoplastic elastomers having improved low temperature properties |
US20090256088A1 (en) * | 2004-05-18 | 2009-10-15 | Hydraulik-Ring Gmbh | Freeze-resistant metering valve |
US20190359178A1 (en) * | 2018-05-22 | 2019-11-28 | Continental Automotive Systems, Inc. | Vehicle camera and sensor washer manifold assembly |
US20220307622A1 (en) * | 2021-03-26 | 2022-09-29 | Ford Global Technologies, Llc | Assembly for sensor cleaning with solenoid |
US20220307619A1 (en) * | 2021-03-23 | 2022-09-29 | Ford Global Technologies, Llc | Autonomous sensor cleaning solenoid |
US20220306047A1 (en) * | 2021-03-23 | 2022-09-29 | Ford Global Technologies, Llc | Assembly for sensor cleaning with solenoid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US660382A (en) * | 1899-04-05 | 1900-10-23 | Frank Lambert | Safety device for hydraulic apparatus. |
DE10362140C5 (en) * | 2003-12-29 | 2015-10-08 | Cummins Ltd. | Freezer-compatible exhaust aftertreatment device for a motor vehicle |
ITMI20072361A1 (en) * | 2007-12-18 | 2009-06-19 | Spluga Di Andrea Cagnacci & C | WATER DEVICE |
-
2020
- 2020-02-28 FR FR2002040A patent/FR3107683B1/en active Active
-
2021
- 2021-01-19 JP JP2022551817A patent/JP2023516626A/en active Pending
- 2021-01-19 WO PCT/EP2021/050999 patent/WO2021170312A1/en unknown
- 2021-01-19 US US17/801,863 patent/US20230167920A1/en not_active Abandoned
- 2021-01-19 CN CN202180025451.9A patent/CN115335623A/en active Pending
- 2021-01-19 KR KR1020227033247A patent/KR20220148231A/en unknown
- 2021-01-19 EP EP21700596.6A patent/EP4111080A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030125454A1 (en) * | 2000-03-24 | 2003-07-03 | Ellul Maria D. | Thermoplastic elastomers having improved low temperature properties |
US20090256088A1 (en) * | 2004-05-18 | 2009-10-15 | Hydraulik-Ring Gmbh | Freeze-resistant metering valve |
US20190359178A1 (en) * | 2018-05-22 | 2019-11-28 | Continental Automotive Systems, Inc. | Vehicle camera and sensor washer manifold assembly |
US20220307619A1 (en) * | 2021-03-23 | 2022-09-29 | Ford Global Technologies, Llc | Autonomous sensor cleaning solenoid |
US20220306047A1 (en) * | 2021-03-23 | 2022-09-29 | Ford Global Technologies, Llc | Assembly for sensor cleaning with solenoid |
US20220307622A1 (en) * | 2021-03-26 | 2022-09-29 | Ford Global Technologies, Llc | Assembly for sensor cleaning with solenoid |
Also Published As
Publication number | Publication date |
---|---|
CN115335623A (en) | 2022-11-11 |
KR20220148231A (en) | 2022-11-04 |
EP4111080A1 (en) | 2023-01-04 |
WO2021170312A1 (en) | 2021-09-02 |
FR3107683A1 (en) | 2021-09-03 |
JP2023516626A (en) | 2023-04-20 |
FR3107683B1 (en) | 2024-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20230167920A1 (en) | Valve for a spray system | |
US11124159B2 (en) | Washer fluid vehicle reservoir | |
US20030089409A1 (en) | Valve device with check valve, used for washer nozzle and hose joint | |
EP2321161B1 (en) | Device for cleaning vehicle surfaces | |
US20230027750A1 (en) | Valve for a spray system | |
US20200317160A1 (en) | Liquid distribution assembly for a sensor cleaning system and method | |
JP2007531856A (en) | Freeze-resistant metering valve | |
US8430332B2 (en) | Thermostatic valve with sleeve, thermal engine associated with a cooling circuit including such valve and method for making the sleeve for such valve | |
JP2002539029A (en) | Spray equipment for window cleaning equipment | |
CN107743459B (en) | Valve and cleaning device for a motor vehicle | |
US11840203B2 (en) | Vehicular washing device | |
CN111940162A (en) | Fluid dispensing system, fluid dispenser and fluid ejection method using the same | |
US6782908B2 (en) | Automotive washer system utilizing a freezable washer liquid and a freeze-resistant washer liquid | |
EP3875321B1 (en) | Cleaning device for a detection system | |
US20210002874A1 (en) | Conduit Connector | |
CN104696582A (en) | Water switch and air-conditioner with water switch | |
US11339879B2 (en) | Seal assembly and fluid valve | |
JP2017081532A (en) | Adapter for conduit for liquid and device for distribution of liquid in motor vehicle | |
JP4838182B2 (en) | Freezing valve | |
CN204533776U (en) | Water switch and the air conditioner with it | |
JP7492233B2 (en) | solenoid valve | |
CN114877113B (en) | Prevent frostbite and split valve body and contain its gas heater | |
US20200370665A1 (en) | Device and method for washing a surface of a motor vehicle part and fluid control valve for such device | |
EP4166828A1 (en) | Check valve, check valve-equipped branching tool, and cleaner device | |
CN218845262U (en) | Valve assembly, refrigerating system and vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VALEO SYSTEMES D'ESSUYAGE, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BAUDOUIN, MAXIME;REEL/FRAME:062631/0391 Effective date: 20220905 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |